Global Patent Index - EP 2164140 A4

EP 2164140 A4 20130605 - FIBER LASER HAVING EXCELLENT REFLECTED LIGHT RESISTANCE

Title (en)

FIBER LASER HAVING EXCELLENT REFLECTED LIGHT RESISTANCE

Title (de)

FASERLASER MIT HOHER BESTÄNDIGKEIT GEGEN REFLEKTIERTES LICHT

Title (fr)

LASER À FIBRES OPTIQUES AYANT UNE EXCELLENTE RÉSISTANCE À LA LUMIÈRE RÉFLÉCHIE

Publication

EP 2164140 A4 20130605 (EN)

Application

EP 08790601 A 20080625

Priority

  • JP 2008061534 W 20080625
  • JP 2007169042 A 20070627

Abstract (en)

[origin: EP2164140A1] An MO-PA fiber laser having a master oscillator; and a first power amplifier which uses as a gain medium, a rare earth-doped optical fiber which is connected to a later stage of the master oscillator, wherein the MO-PA fiber laser has a wavelength conversion portion between the master oscillator and the power amplifier, and has a wavelength filter between the wavelength conversion portion and the master oscillator which only allows wavelength components of pulse light emitted from the master oscillator to pass, thereby making it possible to prevent breakage to a fiber laser which is caused by reflection light without using high-cost optical components.

IPC 8 full level

H01S 3/067 (2006.01); G02F 1/35 (2006.01); H01S 3/00 (2006.01); H01S 3/108 (2006.01); H01S 3/16 (2006.01); H01S 3/23 (2006.01); H01S 3/30 (2006.01)

CPC (source: EP)

H01S 3/06754 (2013.01); H01S 3/0078 (2013.01); H01S 3/06741 (2013.01); H01S 3/06779 (2013.01); H01S 3/1618 (2013.01); H01S 3/2375 (2013.01); H01S 3/302 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 2164140 A1 20100317; EP 2164140 A4 20130605; EP 2164140 A8 20100714; EP 2164140 B1 20170802; AU 2008268087 A1 20081231; AU 2008268087 B2 20120906; CA 2693112 A1 20081231; CA 2693112 C 20131210; CN 101584093 A 20091118; CN 101584093 B 20111123; JP 5198292 B2 20130515; JP WO2009001852 A1 20100826; RU 2010102046 A 20110810; RU 2460186 C2 20120827; US 2010135340 A1 20100603; US 8295314 B2 20121023; WO 2009001852 A1 20081231

DOCDB simple family (application)

EP 08790601 A 20080625; AU 2008268087 A 20080625; CA 2693112 A 20080625; CN 200880001224 A 20080625; JP 2008061534 W 20080625; JP 2008554354 A 20080625; RU 2010102046 A 20080625; US 64803109 A 20091228